<form class="csb-mob" role="search">
  <label class="csb-sr" for="csb-mob-i">Search</label>
  <svg viewBox="0 0 24 24" aria-hidden="true">
    <circle cx="11" cy="11" r="7" />
    <path d="m20 20-3.5-3.5" />
  </svg>
  <input id="csb-mob-i" type="search" name="q" inputmode="search" placeholder="Search..." />
</form>

.csb-mob {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: #2a2a3e;
  border-radius: 14px;
  min-height: 44px;
  min-width: 280px;
}
.csb-mob:focus-within { background: #1f1f28; box-shadow: 0 0 0 2px rgba(124,108,255,0.4); }
.csb-mob svg { width: 18px; height: 18px; fill: none; stroke: #b8b6d4; stroke-width: 2; stroke-linecap: round; }
.csb-mob input {
  flex: 1; padding: 0;
  border: 0; outline: none; background: transparent;
  color: #f0eeff; font: 500 16px/1 system-ui, sans-serif;
}
.csb-mob input::placeholder { color: #b8b6d4; }

.csb-sr {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}